DZR cast brass body is durable, corrosion resistant and ideal for prolonged contact with water Pressure Balance Rough-In Valve 1/2 Stub-out Inlets/Outlets Shower Valve With Stops GROHE 35112000 GrohSafe 3.0 Pressure Balance Valve Rough With Flush Plug With PEX Cold Expansion Outlets With Service Stops, Unfinished, Faucet Stems - Canada Shower Valve With Service Stops The Grohe GrohSafe 3.0 Shower Rough-in Valve is engineered for quick, easy installations no matter the situation. Compact body allows for a hassle-free fit even in tight spaces. Flat back ensures solid mounting on a standard cross brace, and installation on thin walls or steel is sturdy and secure. Made of DZR brass to resist corrosion, the GrohSafe 3.0 is equipped with a flush plug that... Can be tested using flush plug with air (200 psi) or water (300 psi) The GROHE GrohSafe Balance Valve Rough with Flush Plug with PEX Cold Expansion Outlets with Service Stops Flush plug allows valve body to be tested and flushed without the presence of the valve cartridge (ships with trim)